Thank you
tclederman for you reply. Adjacent to the left of the distributor the boss is stamped FBA208845. Below that, a circled '48' is present as well as numbers I cannot read tonight without getting under the truck which I will gladly do tomorrow since I have just had a shower and cleaned myself of this day's grease - bruises didn't wash off unfortunately.

I'll get back at you with those other numbers tomorrow. Thanks!!